中国东北朝鲜人问题是李顿调查团来华重点调查的内容之一。调查团通过与中日双方高层官员的会谈、接见朝鲜人代表团和实地视察等多种调查方式对东北朝鲜人问题进行了调查。日本为了合理化自身在中国东北的侵略行为，主动成为这一问题的强烈“控诉方”。奉系军阀统治时期对东北朝鲜人的驱赶和压迫的事实也转而成为日本攻击南京国民政府无序政治的重要武器。与此同时，南京国民政府一边驳斥日本主张，辩护压迫驱逐的行为，一边也积极通过舆论和朝鲜排华暴动事件尝试反击日本的“控诉”。李顿调查团结束调查后，调查团中的法律专家随员杨格负责撰写了东北朝鲜人问题的报告书，他在报告书中虽然尽量使自己立于较为客观的位置，但囿于时代认知，难言客观。杨格的报告书中充满着对东北朝鲜人境遇的人道主义同情，借此杨格表达出对南京国民政府在东北是否公正司法的质疑。最后，通过分析李顿调查团在《国联调查报告书》中提出的关于东北朝鲜人问题的解决建议发现，西方列强借东北朝鲜人问题表达对南京国民政府在东北司法裁判权的不信任，本质上是帝国主义逻辑和西方绥靖思想的产物。

The problem of the Koreans in Northeast China is one of the key investigation of the Lytton Commission visit to China. To investigate this problem, the Commission adopted a variety of investigative resorts, including meetings with senior officials from China and Japan, interviewing Korean delegations and conducting field inspection. Aiming at justifying its aggression in Northeast China, Japan strongly took initiative in complaining of this issue that the expulsion and oppression of the Koreans in Northeast China who under the reign of the Fengtian Warlords, and this also turned into an important weapon for Japan to attack the disorder of the Nanking Government. At the same time, while refuting Japan's claims and defending oppression and expulsion, the Nanking Government also actively tried to against Japan's accusations through public opinion and the Korean anti-Chinese riots. After the investigation of the Lytton Commission, C.Walter Young who is a law expert of the Commission was responsible for submitting the Study of Korean Problems in Manchuria to the Commission as references. Although Young attempted to put himself in an objective position in his study, the limitations of his understanding of the times made his study hard to objective. Young's study was full of humanitarian sympathy for the plight of the Koreans whereby he expressed doubts about the impartial administration of justice in the Northeast China by the Nanking Government. At last, discovering the Western counties exploited the Koreans problem to express their distrust of the judicial jurisdiction of the Nanking Government in the Northeast China by analyzing the Lytton Commission’s proposal on the settlement of the Koreans in Northeast China issue was put forward in the Report of the Commission of Enquiry. Essentially, it was the result of imperialist logic and Western appeasement.